biology vs vegetation

biology and vegetation both are nouns.

Word	Noun	Adjective	Verb	Adverb
biology	Yes	No	No	No
vegetation	Yes	No	No	No

biology (noun)	vegetation (noun)
the science that studies living organisms	inactivity that is passive and monotonous, comparable to the inactivity of plant life
all the plant and animal life of a particular region	an abnormal growth or excrescence (especially a warty excrescence on the valves of the heart)
characteristic life processes and phenomena of living organisms	all the plant life in a particular region or period
	the process of growth in plants